Electrical connecter



Sept. 23, 1930. P. F. WILLIAMS 1,776,275

ELECTRICAL COINBCTIR um am 17, 1922 Patented Sept. 23, 1930 I UNITEDSTATES PATENT OFFICE PAUL F. WILLIAMS, OF CHICAGO, ILLINOIS, ASSIGNOR TG & W ELECTRIC SPECIALTY 00., OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS ELECTRICAL CONN ECTER My invention relates to electrical con-,necters, particularly of the kind commonly known as potheads.

One of the objects of the invention is to provide a simple, practicaland advantageous construction of device of the class specified.

Another object of the invention is to simplify and improve theconnecting devices by which the electrical conductors are conapplicableto potheads of other kinds and varieties.

Referring to the drawings, I show a structure comprising a lower member1 and upper member 2, both preferably made of porcelain and the member 2being preferably in the form of amp to fit on top of and to some extentextend down upon member 1. The member 1 is to receive the cable and themember 2 to receive the overhead con- (it provided with a downwardlyextending plug portion 7 the lower portion of which is screw threaded asat 8. Threaded washers 9 and 10 hold the plug member 7 and therefore theterminal 4 firmly in position in cap 1 1. member 2. A secondary plugmember 11 is secured to the lower end of member 7, as by providing itwith a threaded end 12 adapted to fit into the threaded socket 13 in thelower end of member 7. Member 11 is provided with an enlarged head 14adapted to fit into socket 15 at upper end of terminal 3.

=member as at 16 so as to permit it to slide readily 1922; Serial No.569,057.

A sleeve 16 is fitted over member 7, being interiorly threaded to screwon threads 8 of 7. Lower end of sleeve 16 is split into and out ofsocket 15 in terminal 3, thereby making an electrical connection andbreaking the same. Member 11, particularly head 14 thereof, is fortaking up an arc, should any be formed on breaking circuit. Ring 19 isscrewed on upper threaded end 18 of terminal 3, and also forms an arctaking member. By making members 11 and 19 removable, they may bereadily replaced and new ones substituted when worn or damaged.

' Threaded nut 20 is arranged on terminal 3 to cooperate with internalflange 21 on member 1 and also with member 19 to hold terminal 3 inposition in member 1.

The arrangementforms a very simple, practical and effective constructionfor making and breaking the circuit, and for taking up arcs in casethere are any formed in operation of the device.

It will be understood that changes and modifications may be made withoutdepart ing from the spirit of the invention.

What I claim is 1.-YA device of the class specified having separableoutside members provided. with terminals, said terminals havingelectrical contact members for making and breaking connection, and oneof said terminals being provided with an arcing device which engages theterminal and also engages the corresponding outside member to hold theterminal in position.

2. A device of the class specified having separable outside membersprovided with terminals, said terminals having electrical contactmembers for making and breaking connection and one of said terminalshaving an arcing device engaging the terminal and also engaging one ofthe outside members.

3. A device of the class specified having a tubular insulating memberand acap of insulatingmaterial detachably mounted on the upper end ofsaid insulating member, terminals for said insulating member and saidcap,

the terminal of the insulating member having a socket at the end nearestthe cap member, a plug member carried by the cap terminal, said plugmember having its lower portion screw threaded, an interiorly threadedsleeve fitted over said threaded plug member, the lower end of saidsleeve being split and being adapted to fit into the socket of saidtubular member terminal, threaded collars on said tubular memberterminal and means on the I tubular member for engaging said threadedcollars.

4. A device of the class specified having a tubular insulatingmeinberand a cap of insulating material detachably mounted on the upperend of said insulating member, terminalsfor said insulating member andsaid cap, the terminal of the insulating member having a socket at theend nearest the cap mem ber, a plug member carried by the cap terminal,said plug member having its lower port1on screw threaded, an interiorlythreaded sleeve fitted over said threaded plugmem- I ber, the lower endof said sleeve being split and being adapted to fit into the socket ofsaid tubular member terminal, threaded collars on said tubular memberterminal and means on the tubular member for engaging said threadedcollars, said meanscomprising an inwardly projecting rim on the tubularmember.

5. A device of the class specified having a tubular insulating memberand a cap of insulating material detachably mounted on the upper end ofsaid insulating member, terminals for said insulating member and saidcap, the terminal of the insulating member having a socket at the endnearest the cap member, a plug member carried by the cap terminal, saidplug member having its lower portion screw threaded, an interiorlythreaded sleeve fitted over said threaded plug mem ber, the lower end ofsaid sleeve being split and being adapted to fit into the socket of saidtubular member terminal, a detachable arcing terminal on said plugterminal enclosed except at its end by said threaded sleeve and adetachable arcing ring on said insulator terminal adapted to cooperatewith the arcing terminal on the plug member.

6. In a device of the class specified, the

I combination with separable outside members of a terminal for aconductor located in one of said members and having a screw threadedend, an arcing annular member having a threaded socket adapted to engagesaid threaded end of said terminal, an annular shoulder within saidoutside member and an annular member having a threaded bore and locatedon the side of said shoulder opposite said arcing annular member to holdthe terminal in place.

7. A device of the class specified having separable outside membersprovided with terminals, said terminals having plug and socketelectrical contact members for making a breaking connection and the plugmember having a separable arcing terminal to take up the effect of arcsat break, and a socket terminal having means for engaging its contact'member and also having a shoulder adapted to engage a shoulder on thecontaining outside member.

In witness whereof, I hereunto subscribe my name this 12th day of May,A. D. 1922.

7 PAUL F. WILLIAMS.

